If I understand my reading correctly, there shouldn't be any antibodies against the ACh receptors in a "normal" (i.e. non MG) person - right?

..... so why does my screen panel have 3 classes: negative, equivocal and positive with ranges for each: i.e. negative is .3nmol/L or less, equivocal is 3.1 to .49, and positive is .5 or better (I registered at .3)

Just curious if anyone knows....